Air Plan Approval; Georgia; Interstate Transport (Prongs 1 and 2) for the 2010 1-Hour NO2

AGENCY:

Environmental Protection Agency (EPA).

ACTION:

Proposed rule.

SUMMARY:

The Environmental Protection Agency (EPA) is proposing to approve a State Implementation Plan (SIP) revision submitted by the State of Georgia, through the Georgia Environmental Protection Division (Georgia EPD), through a letter dated July 24, 2018, for the purpose of addressing the Clean Air Act (CAA or Act) “good neighbor” interstate transport (prongs 1 and 2) infrastructure SIP requirements for the 2010 1-hour Nitrogen Dioxide (NO₂) National Ambient Air Quality Standard (NAAQS). The CAA requires that each state adopt and submit a SIP for the implementation, maintenance, and enforcement of each NAAQS promulgated by EPA, commonly referred to as an “infrastructure SIP.” Specifically, EPA is proposing to approve Georgia's July 24, 2018, SIP revision addressing prongs 1 and 2 to ensure that air emissions in the State do not significantly contribute to nonattainment or interfere with maintenance of the 2010 1-hour NO₂ NAAQS in any other state.

DATES:

Comments must be received on or before April 10, 2019.

ADDRESSES:

Submit your comments, identified by Docket ID No. EPA-R04-OAR-2018-0720 at http://www.regulations.gov. Follow the online instructions for submitting comments. Once submitted, comments cannot be edited or removed from Regulations.gov. EPA may publish any comment received to its public docket. Do not submit electronically any information you consider to be Confidential Business Information (CBI) or other information whose disclosure is restricted by statute. Multimedia submissions (audio, video, etc.) must be accompanied by a written comment. The written comment is considered the official comment and should include discussion of all points you wish to make. EPA will generally not consider comments or comment contents located outside of the primary submission (i.e., on the web, cloud, or other file sharing system). For additional submission methods, the full EPA public comment policy, information about CBI or multimedia submissions, and general guidance on making effective comments, please visit http://www2.epa.gov/dockets/commenting-epa-dockets.

FOR FURTHER INFORMATION CONTACT:

Evan Adams of the Air Regulatory Management Section, Air Planning and Implementation Branch, Air, Pesticides and Toxics Management Division, U.S. Environmental Protection Agency, Region 4, 61 Forsyth Street SW, Atlanta, Georgia 30303-8960. Mr. Adams can be reached by phone at (404) 562-9009 or via electronic mail at adams.evan@epa.gov.

SUPPLEMENTARY INFORMATION:

I. Background

On January 22, 2010, EPA established a new 1-hour primary NAAQS for NO₂ at a level of 100 parts per billion (ppb), based on a 3-year average of the 98th percentile of the yearly distribution of 1-hour daily maximum concentrations. See 75 FR 6474 (February 9, 2010). This NAAQS is designed to protect against exposure to the entire group of nitrogen oxides (NO_X). NO₂ is the component of greatest concern and is used as the indicator for the larger group of NO_X. Emissions that lead to the formation of NO₂ generally also lead to the formation of other NO_X. Therefore, control measures that reduce NO₂ can generally be expected to reduce population exposures to all gaseous NO_X which may have the co-benefit of reducing the formation of ozone and fine particles both of which pose significant public health threats. For comprehensive information on the 2010 1-hour NO₂ NAAQS, please refer to the February 9, 2010 Federal Register notice. See 75 FR 6474.

Whenever EPA promulgates a new or revised NAAQS, CAA section 110(a)(1) requires states to make SIP submissions to provide for the implementation, maintenance, and enforcement of the NAAQS. This particular type of SIP submission is commonly referred to as an “infrastructure SIP.” These submissions must meet the various requirements of CAA section 110(a)(2), as applicable. Due to ambiguity in some of the language of CAA section 110(a)(2), EPA believes that it is appropriate to interpret these provisions in the specific context of acting on infrastructure SIP submissions. EPA has previously provided comprehensive guidance on the application of these provisions through a guidance document for infrastructure SIP submissions and through regional actions on infrastructure submissions. Unless otherwise noted below, EPA is following that existing approach in acting on this submission. In addition, in the context of acting on such infrastructure submissions, EPA evaluates the submitting state's implementation plan for compliance with statutory and regulatory requirements, not for the state's implementation of its SIP. EPA has other authority to address any issues concerning a state's implementation of the rules, regulations, consent orders, etc. that comprise its SIP.

Section 110(a)(2)(D) has two components: 110(a)(2)(D)(i) and 110(a)(2)(D)(ii). Section 110(a)(2)(D)(i) includes four distinct components, commonly referred to as “prongs,” that must be addressed in infrastructure SIPs. The first two prongs, which are codified in section 110(a)(2)(D)(i)(I), are provisions that prohibit any source or other type of emissions activity in one state from contributing significantly to nonattainment of the NAAQS in another state (prong 1) and from interfering with maintenance of the NAAQS in another state (prong 2). EPA sometimes refers to the prong 1 and prong 2 conjointly as the “good neighbor” provision of the CAA. The third and fourth prongs, which are codified in section 110(a)(2)(D)(i)(II), are provisions that prohibit emissions activity in one state from interfering with measures required to prevent significant deterioration of air quality in another state (prong 3) and from interfering with measures to protect visibility in another state (prong 4). Section 110(a)(2)(D)(ii) requires SIPs to include provisions ensuring compliance with sections 115 and 126 of the Act, relating to interstate and international pollution abatement.

EPA's most recent infrastructure SIP guidance, the September 13, 2013, “Guidance on Infrastructure State Implementation Plan (SIP) Elements under Clean Air Act Sections 110(a)(1) and 110(a)(2),” did not explicitly include criteria for how the Agency would evaluate infrastructure SIP submissions intended to address section 110(a)(2)(D)(i)(I). With respect to certain pollutants, such as ozone and particulate matter (PM), EPA has addressed interstate transport in eastern states in the context of regional rulemaking actions that quantify state emission reduction obligations. For NO₂, EPA has considered available information from states such as current air quality, emissions data and trends, and regulatory provisions that control source emissions to determine whether emissions from one state interfere with the attainment or maintenance of the NAAQS in another state. EPA's review and proposed action on Georgia's CAA section 110(a)(2)(D)(i)(I) interstate transport SIP revision for the 2010 NO₂ NAAQS is informed by these considerations.

Through this proposed action, EPA is proposing to approve Georgia's July 24, 2018, SIP revision addressing the prong 1 and prong 2 requirements for the 2010 1-hour NO₂ NAAQS. The State addressed CAA section 110(a)(2)(D)(i)(I) by providing information supporting its conclusion that emissions from Georgia do not significantly contribute to nonattainment or interfere with maintenance of the 2010 1-hour NO₂ NAAQS. All other applicable infrastructure SIP requirements for Georgia for the 2010 1-hour NO₂ NAAQS have been addressed in separate rulemakings. See 80 FR 14019 (March 18, 2015), 81 FR 63106 (September 14, 2016), and 83 FR 19637 (May 4, 2018).

II. What is EPA's analysis of how Georgia addressed prongs 1 and 2?

In Georgia's July 24, 2018, SIP revision, the State concluded that its SIP adequately addresses prongs 1 and 2 with respect to the 2010 1-hour NO₂ NAAQS. Georgia provides the following reasons for its determination: (1) There are SIP-approved and state-only regulations that directly or indirectly control NOx emissions; (2) all areas in the United States are designated as unclassifiable/attainment for the 2010 1-hour NO₂ NAAQS; (3) monitored 1-hour NO₂ design values in Georgia and surrounding states (Alabama, Florida, North Carolina, South Carolina, and Tennessee) are below the 2010 standard; and (4) point source emissions of NOx in the State have trended downward. EPA preliminarily agrees with the State's conclusion based on the rationale discussed below.

First, Georgia identifies SIP-approved portions of the following State rules that directly or indirectly control NO_X emissions: Georgia Rules for Air Quality Control 391-3-1-.03—Permits; 391-3-1-.02(7)—Prevention of Significant Deterioration (PSD); 391-3-1-.02(2)(yy)—Emissions of Nitrogen Oxides from Major Sources; 391-3-1-.02(2)(jjj)—NO _X Emissions from Electric Utility Steam Generating Units; 391-3-1-.02(2)(lll)—NO _X Emissions From Fuel Burning Equipment; 391-3-1-.02(2)(rrr)—NO _X Emissions From Small Fuel-Burning Equipment; and 391-3-20—Enhanced Inspection and Maintenance. In addition to the SIP-approved rules mentioned above, Georgia also identifies Rule 391-3-1-.02(sss)—Multipollutant Control for Electric Utility Steam Generating Units, a rule that is not incorporated into the SIP, as a measure that targets NO_X emissions.

Second, there are no designated nonattainment areas for the 2010 1-hour NO₂ NAAQS nationwide. On February 17, 2012 (77 FR 9532), EPA designated the entire country as “unclassifiable/attainment” for the 2010 1-hour NO₂ NAAQS, stating that “available information does not indicate that the air quality in these areas exceeds the 2010 1-hour NO₂ NAAQS.”

Third, the 2015-2017 NO₂ design values in Georgia are below the 2010 1-hour NO₂ NAAQS standard of 100 ppb. The highest monitored design value in the State is 56 ppb, which is 44 percent below the standard. Additionally, the highest monitored 2015-2017 valid design values for the neighboring states of Florida, North Carolina, South Carolina, and Tennessee are below the 2010 standard (at 42, 38, 42, and 53 ppb, respectively). EPA notes that the trends in NO₂ design values for the southeast indicate a 42 percent decrease in measured NO₂ concentrations from 2000-2017.

Fourth, emissions data provided in the SIP submittal show that NO_x emissions decreased from 1990 to 2017 by approximately 58 percent. In 2017, highway vehicles were the largest contributors with 153,635 tons per year (tpy), and off-highway vehicles were second with 56,872 tpy.

For all the reasons discussed above, EPA has preliminarily determined that Georgia does not contribute significantly to nonattainment or interfere with maintenance of the 2010 1-hour NO₂ NAAQS in any other state and that Georgia's SIP includes adequate provisions to prevent emissions sources within the State from significantly contributing to nonattainment or interfering with maintenance of this standard in any other state.

III. Proposed Action

As described above, EPA is proposing to approve Georgia's July 24, 2018, SIP revision addressing prongs 1 and 2 of CAA section 110(a)(2)(D)(i) for the 2010 1-hour NO₂ NAAQS.

IV. Statutory and Executive Order Reviews

Under the CAA, the Administrator is required to approve a SIP submission that complies with the provisions of the Act and applicable Federal regulations. See 42 U.S.C. 7410(k); 40 CFR 52.02(a). Thus, in reviewing SIP submissions, EPA's role is to approve state choices, provided that they meet the criteria of the CAA. This action merely proposes to approve state law as meeting Federal requirements and does not impose additional requirements beyond those imposed by state law. For that reason, this proposed action:

• Is not a significant regulatory action subject to review by the Office of Management and Budget under Executive Orders 12866 (58 FR 51735, October 4, 1993) and 13563 (76 FR 3821, January 21, 2011);
• Is not an Executive Order 13771 (82 FR 9339, February 2, 2017) regulatory action because SIP approvals are exempted under Executive Order 12866;
• Does not impose an information collection burden under the provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq.);
• Is certified as not having a significant economic impact on a substantial number of small entities under the Regulatory Flexibility Act (5 U.S.C. 601 et seq.);
• Does not contain any unfunded mandate or significantly or uniquely affect small governments, as described in the Unfunded Mandates Reform Act of 1995 (Pub. L. 104-4);
• Does not have Federalism implications as specified in Executive Order 13132 (64 FR 43255, August 10, 1999);
• Is not an economically significant regulatory action based on health or safety risks subject to Executive Order 13045 (62 FR 19885, April 23, 1997);
• Is not a significant regulatory action subject to Executive Order 13211 (66 FR 28355, May 22, 2001);
• Is not subject to requirements of Section 12(d) of the National Technology Transfer and Advancement Act of 1995 (15 U.S.C. 272 note) because application of those requirements would be inconsistent with the CAA; and
• Does not provide EPA with the discretionary authority to address, as appropriate, disproportionate human health or environmental effects, using practicable and legally permissible methods, under Executive Order 12898 (59 FR 7629, February 16, 1994).

The SIP is not approved to apply on any Indian reservation land or in any other area where EPA or an Indian tribe has demonstrated that a tribe has jurisdiction. In those areas of Indian country, the rule does not have tribal implications as specified by Executive Order 13175 (65 FR 67249, November 9, 2000), nor will it impose substantial direct costs on tribal governments or preempt tribal law.

List of Subjects in 40 CFR Part 52

• Environmental protection
• Air pollution control
• Incorporation by reference
• Intergovernmental relations
• Nitrogen dioxide
• Ozone
• Reporting and recordkeeping requirements

Authority: 42 U.S.C. 7401 et seq.